Silicon Nitride Si3n4 Bonded Silicon Carbide Sic Tube for Thermocouple Protection

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Qingdao
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TT OR LC
Min Order Qty:
5 m.t.
Supply Capability:
500 m.t./month

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Product Description:

Si3N4 bonded SiC ceramic refractory material, is mixed with high pure SIC fine powder and Silicon powder, after slip casting course, reaction sintered under 1400~1500° C. During the sintering course, filling the high pure Nitrogen into the furnace, then the silicon will react with Nitrogen and generate Si3N4, So Si3N4 bonded SiC material is composed of silicon nitride (23%) and silicon carbide(75%) as main raw material, mixed with organic material, and shaped by mixture, extrusion or pouring, then made after drying and nitrogenization.

Si3N4 bonded SiC as a new type refractory material, is used widely. The applying temperature is 1400 C. It has better thermal stability, thermal shock, which is better than plain refractory material and recrystallized SiC. It also has antioxidation, high corrosion resistant, wear-resistantance, high bending strength. It can resist corrosion and scouring, be no polluted and fast heat conduction in molten metal such as AL, Pb, Zn, Cu ect.

Please check below specification:
The diameter of Si3N4 bonded SiC thermocouple protection tube is Φ 12-80mm, length is 1600 mm. It can be usded in high temperature kiln furnace and all kinds of atmosphere. It also can be directly used in all kinds of melted liquid.
Liquid tube, heating sheath, protection tube: Used in aluminum liquid and glass liquid. It has good thermal conductivity, corrosion resistance, compression resistance, long lif ect.
Roller tube: Used in brickkiln furnace on the ground, diameter Φ 30-50mm, length within 1600mm, high temperature resistance, no deformation, high strength
4. Kiln furniture: Used in tunnel kiln, shuttle kiln, down draught kiln, with good carrying capacity. It is ideal kiln furniture for increasing output of kiln furnace and make good use of space of kiln furnace.
5. Sagger: Used for firing high grade refractory material, rare metal, powder metallurgy, electronic components and various loose material. Shape can be canister and rectangle.
6. Various refractory piece: With impact resistance, high temperature resistance, wear-resistance, good thermal shock resistance ect. Suitable for heat exchanger, cold air pipe, burner nozzle, crucible.
It can not only gain energy-saving effect, but also can keep product from pollution, and long life and convenient operation if you choose Si3N4 bonded SiC.

The physical and chemical performance of Si3N4 bonded SiC:


Item

Index

Compressive strength Mpa

> 120

Bending strength Mpa

> 40

Vol. density g/cm³

2.4

Porosity %

20

Thermal conductivity (1200 °C) W/M °C

15

Thermal shock 1000°C-20°C

> 20 times

Resistivity

10 4

Moh's hardness

> 9

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Q:How high can aluminum bricks expand at 80O degrees of heat?
When an object is heated, the particle moves faster and thus occupies additional space. This phenomenon is called dilation.
Q:How much is the bending temperature aluminum silicon carbide brick for torpedo car
The product has the advantages of high temperature, little creep, strong corrosion resistance and good thermal shock resistance, and is suitable for large and medium-sized hot blast stoves.
Q:How to reduce porosity of high alumina brick
In order to reduce the porosity of high alumina brick, the corresponding measures should be taken from the selection of raw materials, batching, mixing, molding and firing.
Q:What are the common thermal insulation materials for thermal conductivity?
The vacuum heat insulation plate is a kind of high efficiency thermal insulation board made of inorganic fiber core material and high resistance gas composite film. It is made of vacuum encapsulation technology and covered with special interface mortar.
Q:What are the lining structures of lime rotary kilns and what are the requirements for refractories?
The rotary kiln lining structure of rotary kiln and requirements on refractories calcining active lime according to the general output is divided into Nissan 300t, 400 t, 600 t, 800 t, 1000 t, 12000 t of kiln type, calcining zone temperature at 1350 degrees celsius. The kiln is divided into a discharge end, a cooling zone, a burning zone, a preheating zone and a feeding end, and the temperature of each section of the kiln ranges from 1000 DEG C to 1350 DEG C, and the requirements for refractory materials are different. The kiln refractory materials not only to withstand the high temperature impact, but also need to bear the material erosion, kiln rotation stress produced, so not only on the physico-chemical properties of refractory materials have strict requirements, but also for the construction of brick should be strictly.
Q:How are the high alumina bricks fired?
According to the quality requirements of different grades of high alumina brick, choose different grades of bauxite raw materials, it is conducive to rational use, fine materials, fine distribution, as far as possible not to use mixed grade severe raw materials. The quality of the clinker depends on the calcination temperature, calcination temperature, sintering temperature should be generally reached or slightly higher than that of alumina clinker sintering, to ensure the full and possible high volume density, and the two secondary Mullitization and sintering shrinkage effect in calcination process. Lightweight high alumina brick, also known as high aluminum insulation brick (high-aluminium heat insulating brick). A lightweight refractory consisting of mullite and glass phases or corundum in excess of 48%. The volume density is 0.4 ~ 1.35g/cm3. The porosity is 66% ~ 73%, and the compressive strength is 1 ~ 8MPa. Better thermal shock resistance.
Q:What is the apparent porosity of high alumina brick?
Total porosity is porosity refers to the total volume of sample porosity in the percentage of total volume of samples. Apparent porosity refers to the percentage of the total volume of openings, pores, and total specimens in the sample.
Q:Corundum, high alumina and fireclay refractory difference is what
They differ in that the alumina content is different, and the content is in order: corundum > high alumina > clay.
Q:What are ordinary bricks, refractory bricks, hollow bricks?
Referred to as refractory brick. Refractory wood made from refractory clay or other refractory material
Q:Refractory brick, high alumina brick, magnesia chrome brick or magnesia brick, clay brick, which type of high temperature refractory brick?
High alumina brick clay brick up to 1700 degrees above 1500 degrees -1750 degrees of magnesia brick and magnesia chrome brick 1500-1650 degrees, I is the production of clay brick, brick my temperature at 1500-1700 degrees. Specific depends on what kiln, brick is only part of it

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